{
  "manageEntity": {
    "action": "Save",
    "entityId": "613231165",
    "entityType": "Track",
    "nonce": "0x83812d880215ecdd684e02bb04e59b026a219138565503e6a4b33c4742c77bf3",
    "signature": "0xa7993e1a71c61c61a6ee5c7887e797ee126befbde70382b9908a793b75dff9534236f91d981e632e8e9880c62d3407c20c3e6a47ee7f28acb6010e364bd93b3b1c",
    "signer": "0xDC5D8e6d43489811098d4d3D31fB7D6585c9Bb31",
    "userId": "735980234"
  }
}